20974094132741 has 4 divisors (see below), whose sum is σ = 21540961541772. Its totient is φ = 20407226723712.

The previous prime is 20974094132617. The next prime is 20974094132753. The reversal of 20974094132741 is 14723149047902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11900112719716 + 9073981413025 = 3449654^2 + 3012305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20974094132741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20974094122741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283433704460 + ... + 283433704533.

It is an arithmetic number, because the mean of its divisors is an integer number (5385240385443).

Almost surely, 2^{20974094132741} is an apocalyptic number.

It is an amenable number.

20974094132741 is a deficient number, since it is larger than the sum of its proper divisors (566867409031).

20974094132741 is an equidigital number, since it uses as much as digits as its factorization.

20974094132741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566867409030.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 20974094132741 in words is "twenty trillion, nine hundred seventy-four billion, ninety-four million, one hundred thirty-two thousand, seven hundred forty-one".